I got it a few years back for £15. If you buy it as I did on my iPhone I got it free when I got an iPad. Works really well and I have waterproof cases for both units. They make really good back up systems

Hi thanks. I have Navionics on my iPad and it is really good there is now an advanced form which is called Navionics + this has greater definition of the sea bed in areas. It costs £38 but I was wondering if anybody has downloaded this upgrade?